Description
High speed heat treated steel: countersink drill bits are made of high speed steel, QUENCHING treatment, so they are HIGH HARDNESS, WEAR-RESISTING and DURABLE..Different Sizes: Countersink drill bit set included 5 kinds of sizes:2.8 x 8mm, 3.0 x 8mm, 3.2 x 8mm, 3.5 x 8mm, 4.0 x 8mm, very suitable for using to multi size wood hole drilling. One tool for multi uses, improve your working efficiency..Three Pointed Design: Quickly and accurately drill a smooth hole. Better in centering and no skid.Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.It can effectively prevent the accumulation of debris retention, improve the drilling efficiency..Adjustable Cutting height: 2.5-10.5mm.Applies: drilling machinery with chuck or joints,the best adjustable wood countersunk bit set ideal for woodworking.
